1 //===-- SystemZConstantPoolValue.cpp - SystemZ constant-pool value --------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 #include "SystemZConstantPoolValue.h"
11 #include "llvm/ADT/FoldingSet.h"
12 #include "llvm/IR/DerivedTypes.h"
13 #include "llvm/IR/GlobalValue.h"
14 #include "llvm/Support/raw_ostream.h"
15
16 using namespace llvm;
17
18 SystemZConstantPoolValue::
SystemZConstantPoolValue(const GlobalValue * gv,SystemZCP::SystemZCPModifier modifier)19 SystemZConstantPoolValue(const GlobalValue *gv,
20 SystemZCP::SystemZCPModifier modifier)
21 : MachineConstantPoolValue(gv->getType()), GV(gv), Modifier(modifier) {}
22
23 SystemZConstantPoolValue *
Create(const GlobalValue * GV,SystemZCP::SystemZCPModifier Modifier)24 SystemZConstantPoolValue::Create(const GlobalValue *GV,
25 SystemZCP::SystemZCPModifier Modifier) {
26 return new SystemZConstantPoolValue(GV, Modifier);
27 }
28
29 int SystemZConstantPoolValue::
getExistingMachineCPValue(MachineConstantPool * CP,unsigned Alignment)30 getExistingMachineCPValue(MachineConstantPool *CP, unsigned Alignment) {
31 unsigned AlignMask = Alignment - 1;
32 const std::vector<MachineConstantPoolEntry> &Constants = CP->getConstants();
33 for (unsigned I = 0, E = Constants.size(); I != E; ++I) {
34 if (Constants[I].isMachineConstantPoolEntry() &&
35 (Constants[I].getAlignment() & AlignMask) == 0) {
36 auto *ZCPV =
37 static_cast<SystemZConstantPoolValue *>(Constants[I].Val.MachineCPVal);
38 if (ZCPV->GV == GV && ZCPV->Modifier == Modifier)
39 return I;
40 }
41 }
42 return -1;
43 }
44
addSelectionDAGCSEId(FoldingSetNodeID & ID)45 void SystemZConstantPoolValue::addSelectionDAGCSEId(FoldingSetNodeID &ID) {
46 ID.AddPointer(GV);
47 ID.AddInteger(Modifier);
48 }
49
print(raw_ostream & O) const50 void SystemZConstantPoolValue::print(raw_ostream &O) const {
51 O << GV << "@" << int(Modifier);
52 }
53